AP-23822: Prevent nested error messages

Author: Alex-J-W

org.knime.python3.nodes/src/main/java/org/knime/python3/nodes/PurePythonNodeSetFactory.java

@@ -115,8 +115,7 @@ private static KnimeExtension parseExtension(final Path extensionPath, final Str
         } catch (Exception ex) { //NOSONAR
             // any kind of exception must be prevented, otherwise a single corrupted extension would prevent the whole
             // class from loading
-            LOGGER.error(String.format("Failed to parse Python node extension at path '%s'. %s", extensionPath,
-                ex.getMessage().replaceAll("[\n\r]$", "")), ex);
+            LOGGER.error(String.format("Failed to parse Python node extension at path '%s'", extensionPath), ex);
             return null;
         }
     }

org.knime.python3/src/main/java/org/knime/python3/FreshPythonGatewayFactory.java

@@ -87,7 +87,7 @@ public <E extends PythonEntryPoint> PythonGateway<E> create(final PythonGatewayD
             } catch (Py4JException ex) {
                 gateway.close();
                 PythonProcessTerminatedException.throwIfTerminated(gateway, ex);
-                throw new IOException(ex.getMessage(), ex);
+                throw new IOException(ex.getMessage());
             } catch (Exception ex) {
                 gateway.close();
                 throw new IllegalStateException("Customization of entry point failed.", ex);